Carpet-renovator.



No. 725,299. l PATENTBD APP.. 14, 1903.

J. s. THURMAN.

CARPET RBNGVATUR.

APPLICATION FILED AUG.16, 1902.

NO MODEL. 'A v 2 SHEETS-SHEET l.

no'MoDBL.

PATENTED APP.. 14. 190s. J.' s. THURMAN.

CARPET RBNOVATOR.

APPLICATION FILED AUG. 1e, 1902.

2 SHEETS-SHEET 2.

view, partly in horizontalsection.

UNITED STATES j -PATENT OFFICE.

JOIjIN S. VTIIURMAN, OF ST. LOUIS, MISSOURI.

CARPETQRENQVATOR.

SPECIFICATION forming part of Letters Patent N o. 725,299, dated'Apr114, 1903.

Appiitaitnfuea August 16,1992:I fs'rti No. 119,944. (No modem To all whom it may concern: A

Be it known that I, JOHNS. THURMAN, a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in'CarpetRenovators,of

which the following is a full,.clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use-the same, reference beinghad to the accompanying drawings, `.forming `part of this specification, in which Figure 1 is a vertical sectional view through my improved renovator. l `Fig. 2 is a top plan Fig. 3 is a rear elevational view of the casing.y Fig. 4

is a detail view of the nozzle, andFig. 5 is an J end view of the nozzle. f

This invention relates to a new and useful improvement in carpet-renovators of that type which lis designed to be moved over a carpet or other article to be cleaned, compressed air being admitted through a nozzle, so as to direct a blast of air downwardly at an angle into and through the article being renovated.

One ofthe objects of my present invention is to pivot the nozzle, so that the angular relation thereof to the casing can be changed at the will of the operator. v

Another object isto so construct the device that the space behind the nozzle is open to the exterior, which space tends to relieve the device of back pressure which mightresult in dust being blown out around the bottom edges of the casing. This back pressure is not of constant duration, being the result sometimes of the machine encountering considerable iine dust in one spot on a carpet, and at other times resulting from the closure of the meshes of the dustarresting bag through which the dust finally escapes. Un

of back pressure during the ordinary operation of the machine a current of air is induced to flow inwardly through the veut-opening, and consequently any particles of dust floatinto the. machinelby the induced current referred to. y

- vMy inventionconsists in the construction,

arrangement, and combination of the several parts of my device, all as will be hereinafter described, and afterward pointed out in the claims. f Y

' In .the drawings, 1 vindicates the casing, which .is provided withan opening i'uits top, said opening being formed with a iianged wall around .which is secured a dust-arresting bag 2said bag being preferably composed of fabric of such mesh as to` permit air to escape,

butvretain the particles of dust.

3 indicates awcham ber in the casing for the reception of the heavier particles of dust.

`The dust-laden air is forced upwardly through a conduit 5, said dust-laden air beiugintroduced targentially into the chamber, so that centrifugal force will act to separate the heavier particles from the finer, said heavier particles being received in the chamber and the iiner particles floating upwardly in the air andA being arrested by the bag. The upper end of conduitl 5 is normally closed by a flap-,valve 46, which is raised, bythe i 'ing into the ventfopening will be carried back v d pressure of the dust-laden air passing upwardly throughthe conduit 5, said valve closing when the pressure in chamber 3 exceeds that in the conduit, and in this way the back pressure of dust in the conduit 5 is avoided. As particles `of dust are liable to be deposited upon the valve 6, so that its ac-` .tion willbe interferedwith, I arrange a prol jection or shelf 6L above said valve, which overhanging hoodaffords ashelf forl the deposit of dust at this point. The bottom of the casing is provided withan opening 7, through which a blast of air is directed from the nozzle, the dust-laden air again passing through said opening and up into the conduit 5.

8 indicates a blast-nozzle' pivotally connected'to the casing and whose construction is more clearly shown vin Fig. 4., This'nozzle consists of an attaching-,boss 9, inwhich is screwed a handle lO'in the form of ahollow pipe, said handle projecting through an opening ll in the back wall ofthe casing. The

IOO

passage for the airthrough the nozzle is of an inverted-Y shape, the two branches passing on each side of a spreading-post 12 and entering into enlarged chambers in each side of the nozzle. These enlarged chambers also contain spreading-posts 13, which are smaller in size than the post 12 referred to, and the air from each branch is by the posts 13 again divided. so that it will be uniformly distributed throughout the nozzle-opening. The nozzleopening is determined by the thickness of a paper washer 14, arranged on the face of the nozzle S, which paper washer is located between the main portion 8 of the nozzle and a removable plate 15. The plate 15 is provided with an overhanging hood or nose portion 16, extending above and preferably some distance in advance of the nozzleopening, so as to give to the dust-laden air a direction toward the conduit 5. This overhanging nose acts as a deHecting-hood. The nozzle referred to is provided with lateral wings 17, in which are formed bearings for pivot-bolts 1S, introduced through the side of the casing. The rear lower face of the nozzle is formed with a shoulder 19, which acts as a stop to arrest the nozzle in its lowermost position, said stop cooperating with the bottom wall of the casing, as shown in Fig. l. W'hen the nozzle is in its lowermost position, its opening is of course located close to the surface of the article being cleaned. Where such article is provided with nap, as some ot' the well-known makes of carpet, it will be evident that the lower edge of the removable plate 15 will engage the nap, bending it forwardly, so that the blast of air will have di rect access to the body of the carpet. By depressing the handle 10 the nozzle can be elevated slightly, so that the blast of air is directed over the nap in proximity thereto. This has been found advantageous in practice, because the nap in carpets `frequently is mashed in different directions, and where a considerable amount of dirt is held by a carpet of this character it is desirable to elevate the nozzle, so that it only comes in Contact with the surface of the nap until it is freed of the major portion of the surface dust, and then the nozzle is lowered into the nap of the carpet to entirely free it from dust. It is to be understood that the weight of the casing and the operator pressing on the handle l0 depresses the renovator into the nap of the carpet, submerging the nozzle when said nozzle is in the downward position. Passing the machine over a carpet once or twice with the nozzle slightly elevated places the carpet in bett-er condition for treatment when the nozzle is depressed. As the foot portion of the lmain nozzle 8 is worn by frictional contact with the carpet the bottom wall may be cut away, so as to compensate for such wear and permit the nozzle to go to its lowermost position. It is intended that the nozzle in its lowermost position shall at least be flush with the bottom face of the casing, and good results can be obtained by permitting the foot portion of the nozzle to eX- tend slightly below the face of the casing, whereby said nozzle is brought into contact with and turns the nap of the carpet. It will be observedthat when the nozzle is raised the nose portion 1G, being cutaway, as shown at 16a, determines its elevated position, and at the same time it does not close the space above the nozzle, and thus communication through these cut-away portions is preserved with the conduit 5. When the nozzle is elevated, a communication between the chamber containing the nozzle and the conduit 5 is also established beneath the nozzle. Consequently in both positions `of the nozzle, if there is no back pressure in the chamber 3, a current of air is induced to flow through the opening in the rear wall of chamber containing the nozzle inwardly past the nozzle and into the conduit 5. The opening in the rear wail of the casing, through which the handle l() extends, is surrounded by a flange, under which is secured the mouth ot' a screening-bag 20, said bag heilig also provided with an opening, through whichthe handle extends. The function of this. screening-bag, as before described, is to take care of such dust as may be forced thereinto by back pressure; but in the ordinary operation of the machine air from the interior flows into the bag and into the nozzle-chamber, the nozzle acting as an injector. For these reasons the bag 2O is not absolutely necessary to the op# eration of the device and maybe removed, its use being desirable only under the conditions of back pressure above mentioned'.

`I am aware that many minor changes in the construction, arrangement, and combination of the several parts of my device canbe made and substituted for those herein shown and described without in the least departing from the nature and principle of my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a carpet-renovator, the combination with a casing having a chamber open to atmosphere, a nozzle arranged in said chamber for directing a blast ot air to the carpet to be renovated, and a forwardly-extending portion on said nozzle for directing the dust-laden air up into the casing; substantially as described.

2. In a carpet-renovator, the combination with a casing having a dust-collecting chamber, of a conduit for the dust-laden air leading into said chamber, said conduit communicat ing with a chamber which opens to atmosphere, and a nozzle arranged in said lastmentioned chamber; substantially as described.

3. In a carpet-renovator, the combination with a casing having a dust-collecting chamber, of a conduit for conveying dust-laden air into said chamber, a chamber with which said IOO IIO

phere, a nozzle arranged in said last-men-` tioned chamber, and a screen over the opening in said chamber; substantially as described.

5. In a carpet-renovator, the combination with a casing having a dust-collecting chamber, of a conduit for conveying dust-laden air into said chamber, said conduit also communicating with a chamber open to atmosphere, a pivoted nozzle arranged in said lastmentioned chamber, a handle on said nozzle' which extends outside the casing, and a flexible screen covering said opening to atmosphere, said screen being secured to said handle; substantially as described.

6. In a carpet-renovator, the combination with a casing having a chamber 3, a conduit 5 leading into said chamber, an opening 7 in the bottom of the casing communicating with the conduit 5 and with another chamber opening to atmosphere through an opening 11, of a nozzle pivoted in said last-mentioned chamber and having a handle extending out through the opening 11, the edges of said opening 11 being formed with outwardly-extending flanges, and a fabric bag secured in position under said flanges and upon the handle 10; substantially as described.

7. In a carpet-reuovator, the combination with a casing having a chamber. open to atmospbere, and a nozzle arranged in said chamber for directing a blast of air downwardly at an angle into and through the carpet to be renovated, said blast of air inducing a current of air to iiow inwardly through the chamber containing the nozzle; substantially as described.

8. In a carpet-renovator, the combination with a casing having a chamber, of a nozzle pivoted in said chamber, and means coperating with its lower end for limiting the movementof said nozzle; substantially as described.

9. In a carpet-renovator, the combination with a casing having a chamber, of a nozzle pivotally mounted in said chamber, said nozzle being provided'with a stop 19 whichcooperates with the bottom wall of the casing; substantially as described. f l

10. In a carpet-renovator, the combination with a casing having a chamber, of a nozzle pivotally mounted in said chamber, and a nose 16 extending forwardly from said nozzle for coperating with the top wall of the chamber and determiningthe elevated position of the nozzle; substantially as described.

11. In a carpet-renovator, the combination with a chamber open to atmosphere, of a nozwardly-extending nose portion on said nozzle;

substantially as described.

12. In a carpet-renovator, thecombination with a chamber open to atmosphere, of a nozzle pivotally mounted therein, the free end of said nozzle cooperating with the bottom wall ot said chamber, and a forwardly-extending nose portion on said nozzle, said nose portion being cut away at places to permit an induced current of air to iow in from a point behind thenozzle; substantially as described.

13. In a carpet-renovator, the combination with a casinghavinga chamber open to atmosphere, of a nozzle pivoted in said chamber, a forwardly-extending nose portion on said nozzle, and a handle with blast-passage therethrough for adjusting the angular position of said nozzle with relation to said casing; substantially as described.

14. In a carpet-renovator, the combination with a casing having a dust-collecting chamber, and a conduit for conveying dust-ladenair to said chamber, of a nozzle f pivotally mountedin said casing and having a shoe portion thereon, designed to ride upon the article being cleaned, the front face of said n0zzle being rigidly connected and acting `as a wall for bending over the nap to give access to the air-blast thereto; substantially as described.

15. Y In a carpet-renovator, the vcombination IOO with a casing having a dust-collecting chamber and a conduit for conveying dust-laden air thereto, of a nozzle pivotally mounted in the casing and having a nose extension projecting forwardly above the discharge-opening therein, said nozzle, in the operation of the machine, being designed to contact with the article being cleaned, and means foradjusting the angular position of said nozzle with respect to said casing-Walls; substantially as described.

16. The herein-described nozzle comprising a body portion with a passage therethrough IIO and formed with a Y-shaped opening below said passage, the branches of said opening leading to enlarged chambers at the end of the nozzle, a plurality of spreading-posts in said chambers at the mouths of said branches,

and a removable face-plate securedto said body portion over said Y-shaped opening for forming one wa'll of the nozzle at the discharge end thereof; substantially as described.

17. In a carpet-renovator, the combination with a casing, ot a nozzle comprising a body portion having winged extensions provided -with bearings, pivots passing through the walls of the casing and into said bearings,

and a handle extending from said nozzle to the exterior of the casing; substantially as described.

18. In a carpet-renovator, the combination Y with a casing, of a nozzle with pivot-bearings therein movable in said casing and having a In testimony whereof I hereunto affix my handle extending to the exterior of the casing, signature, in the presence of two witnesses, lo said nozzlebeingeomposed ofa main body porthis 14th day of August, 1902.

tion a removable plate formino one wall of 5 the nozzle-opening, and a washgr interposed JOHN S THURMAN' between said plate and said body portion for Witnesses: determining the Width of the nozzle-opening; F. R. CORNWALL,

GEORGE BAKEWELL.

substantially as described. 

